Working environment factors
How does Diphenylamine affect workers’ health?
Mar
N-Phenyl aniline (C₁₂H₁₁N) is a common chemical in many industries, but does it pose hidden risks to workers’ health? This article will analyze the effects of N-Phenyl aniline, from respiratory and dermatological impacts to long-term risks, helping you to better understand how to protect your health in the workplace.
1. What is N-Phenyl aniline?
N-Phenyl aniline, with the chemical formula C₁₂H₁₁N, is an organic compound belonging to the aromatic amine group. Its structure consists of a benzene ring linked to an amine group (-NH₂) and a phenyl ring, creating a molecule with the characteristic properties of both amines and aromatic compounds. This chemical typically exists as a pale yellow to brown solid or liquid, depending on purity and environmental conditions.
In industry, N-Phenyl aniline is widely used as an intermediate in the production of dyes, rubber, antioxidants, and other chemical products. Thanks to its thermal stability and antioxidant properties, it plays a crucial role in protecting polymer materials and improving product longevity. Additionally, this chemical is also present in some organic synthesis processes to create high-value compounds in the pharmaceutical and specialty chemical technology sectors.
Despite its many important applications, exposure to N-Phenyl aniline can cause several health effects, especially for workers in manufacturing plants that use this chemical. Therefore, a clear understanding of its chemical properties and safety measures when working with N-Phenyl aniline is essential to protect health and ensure a safe working environment.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Diphenyl amin | N-Phenyl aniline | 29214200 | 122-39-4 | C12H11N |
See more: chemical safety training services according to Decree 113/2017/ND-CP
REGISTER FOR CHEMICAL OCCUPATIONAL SAFETY TRAINING ACCORDING TO DECREE 113
2. Where does N-Phenyl aniline originate from in the production process?
In industrial production processes, this chemical can originate from various sources, mainly related to organic synthesis processes and its application in industries. One of the most common sources is the production of rubber and antioxidants, where it is used to improve the durability and heat resistance of the product.
Additionally, in the dye industry, this compound is created as an intermediate product during the synthesis of coloring agents. Its presence in the air, dust, or on work surfaces can stem from incomplete chemical reactions or from raw material processing stages.
Furthermore, the production processes of plastics, paints, and coatings can also be sources of this chemical, especially when it is used to improve the physical properties of the product. When raw materials are heated or mixed during production, a portion of the compound may evaporate or be released into the work environment, creating an exposure risk for workers.
Besides the sources mentioned above, the transportation, storage, and disposal of waste from industries that use this compound can also release it into the air or the surrounding environment. Without strict control measures, this dispersion can affect the air quality in the work area and increase the risk of exposure for workers.
3. Industries that use N-Phenyl aniline in production
This chemical is used in many different industries, primarily due to its thermal stability, antioxidant properties, and its ability to participate in organic synthesis reactions. One of the most important sectors is the rubber industry, where it acts as an antioxidant and stabilizer, helping to improve the durability and lifespan of rubber products, especially in the production of tires and heat-resistant materials.
In the dye industry, this chemical is used as an intermediate in the synthesis of coloring compounds. Thanks to its special chemical properties, it helps create dyes with high adhesion, colorfastness, and suitability for many types of fabrics and other materials. Dye manufacturing plants often use this chemical in their synthesis processes to increase efficiency and product quality.
The plastics and coatings industry also uses this compound to improve the physical and chemical properties of the final product. It is found in various types of paints, anti-corrosion coatings, adhesives, and engineering plastics. Adding this chemical to the production formula helps increase heat resistance, prevent aging, and protect materials from harsh environmental factors.
Besides, in the chemical industry, this compound is used in organic synthesis processes to create high-value products such as pharmaceuticals, specialty chemicals, and catalysts. Research and development laboratories may also use this chemical in the process of testing and inventing new compounds for various industrial purposes.
4. How does N-Phenyl aniline affect workers?
When exposed to this chemical in the workplace, workers may experience numerous health effects depending on the level of exposure, duration of contact, and route of exposure, such as inhalation of vapor, skin contact, or ingestion. The respiratory system is one of the most susceptible parts of the body, as dust particles or chemical vapors can enter the lungs, causing airway irritation, difficulty breathing, and in some cases, can lead to pneumonia or chronic lung damage.
The skin is also at risk of being affected by direct contact with this chemical. Common symptoms include skin irritation, rashes, itching, and allergic dermatitis. For those with sensitive skin or prolonged exposure without appropriate protective measures, the risk of developing skin diseases such as contact dermatitis or even chronic skin damage can significantly increase.
The central nervous system can also be affected when workers inhale the chemical’s vapor over a long period. Symptoms may include headache, dizziness, nausea, and loss of concentration. At a more severe level, prolonged exposure can cause a decline in neurological function, affecting memory and the body’s reflexes.
Additionally, some studies suggest that long-term exposure to this chemical can affect the circulatory system, leading to blood disorders or issues related to hemoglobin. This can cause a lack of oxygen in the blood, making workers feel tired, weak, and reducing work performance. If not strictly controlled, the risk of developing serious medical conditions can increase, especially in production environments with high concentrations of the chemical.
5. Permissible safe concentration of N-Phenyl aniline for human exposure
In the workplace, determining the safe exposure concentration for chemicals is crucial to protect workers’ health. According to Decision 3733/2002/QD-BYT of the Vietnamese Ministry of Health, the maximum permissible concentration of aniline (C₆H₅NH₂) in the work zone air is regulated as follows:
- 8-hour time-weighted average (TWA): 4 mg/m³
- Short-term exposure limit (STEL): 8 mg/m³
However, there is currently no specific information on the permissible exposure limit for N-Phenyl aniline (C₁₂H₁₁N) in Vietnamese regulatory documents. Therefore, referring to international standards and implementing strict control measures is necessary to ensure safety for workers exposed to this chemical.
At a basic level, when working in an industrial environment, it is important to comply with safety standards and limit exposure to Diphenylamine. Organizations such as the Occupational Safety and Health Administration (OSHA) in the United States provide guidelines and safety principles to protect workers from the negative effects of chemical substances.
6. Measures to mitigate the effects of N-Phenyl aniline on workers’ health
To protect workers’ health when working with N-Phenyl aniline, effective control and prevention measures must be implemented. First, installing an effective ventilation and dust extraction system helps minimize the concentration of the chemical in the air, preventing accumulation and reducing the risk of inhalation. Ensuring that this system is functioning well and regularly maintained is very important.
Using personal protective equipment (PPE) is another important measure. Workers should be equipped with appropriate respirators, chemical-resistant gloves, safety goggles, and protective clothing to prevent direct contact with N-Phenyl aniline. The proper and complete use of PPE helps minimize the risk of chemical absorption through the skin and respiratory tract.
Training and raising awareness about chemical safety are indispensable elements. Workers need to be trained on the hazardous properties of N-Phenyl aniline, safe handling procedures, emergency response protocols, and timely first aid measures. This helps them to fully understand the risks and adhere to safety rules during their work.
Periodic medical surveillance for workers exposed to N-Phenyl aniline is also very important. Through regular health check-ups, early signs of health effects can be detected, leading to timely intervention and prevention of more serious problems.
Finally, the storage and handling of N-Phenyl aniline must comply with strict regulations. The chemical should be stored in sealed containers, placed in a well-ventilated area, away from heat sources and direct sunlight. Waste containing N-Phenyl aniline must be disposed of properly to prevent environmental pollution and the risk of unintended exposure.
Occupational safety training: Workers need to be trained and educated on the risks and safety measures when working with this type of chemical. This training should be provided periodically and frequently to ensure understanding and proper compliance with safety rules.
Periodically organize workplace environment monitoring in factories and enterprises, collecting and analyzing factors harmful to workers, thereby adjusting to reduce hazard levels to prevent occupational diseases for them.
7. National Center for Workplace Environment Monitoring
The Workplace Environment Monitoring Center of Nam Viet is a professional unit specializing in the supervision and measurement of workplace environment quality across all provinces in Vietnam. With a team of experienced monitoring specialists, the center uses modern measuring equipment, ensuring accuracy and reliability.
REGISTER FOR WORKPLACE ENVIRONMENT MONITORING SERVICES
In addition to providing monitoring services, the center also assists clients in planning, handling, and tracking workplace environment issues. With the motto “the customer is the center,” the center focuses on customer satisfaction, meeting all customer needs, and is committed to providing the best solutions for businesses.
With investment in techniques, technology, and human resources, Nam Viet’s monitoring center has become one of the reputable units in the field of workplace environment monitoring in Ho Chi Minh City with the following objectives:
- We always value our brand reputation and the quality of our products and services.
- We provide our customers with the best and most suitable solutions possible.
- With a team of experienced Masters and Engineers, we desire to protect the environment and benefit businesses.
- With the Nam Viet Environmental Monitoring team, your company will receive professional service from experts in the monitoring field, along with the best cost incentives.
8. Price Quote for Workplace Environment Monitoring
To help businesses conduct workplace environment monitoring professionally and effectively, Nam Viet offers our clients a price list for quality and reasonably priced workplace environment monitoring services.
- Our price list provides detailed information on the costs of the monitoring services we offer. It includes all related costs for travel, measurement, analysis, and reporting of results. You can be completely assured of the accuracy and reliability of the monitoring result reports we provide.
- We are committed to always offering the most competitive and reasonable prices on the market, and we are always ready to provide quick and professional consultation and answer any questions about our monitoring services.
- With Nam Viet’s price list, you can easily choose service packages that suit your needs. We are committed to bringing you the highest satisfaction with our professional service quality.
